<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card >
        <!-- 搜索与添加区域 -->
        <el-row :gutter="25 ">
          <el-col :span="10">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
              <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
            </el-input>
          </el-col>
          <el-col :span="4">
              <el-button type="primary" @click="addDialogVisible = true"> 添加用户 </el-button>
          </el-col>
        </el-row>

        <!-- 用户列表区域 -->
      <el-table :data = "userlist" border stripe>
        <el-table-column label=" #"   type="index" > </el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态" >
          <template slot-scope="scope">
              <el-switch v-model="scope.row.mg_state"  @change="userStatuChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>

        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" 
            @click="showEditDialog(scope.row.id)">
            </el-button>

            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" 
            @click="removeUserById(scope.row.id)">
            </el-button>

            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" 
              @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
            
          </template>
        </el-table-column>
      </el-table>

        <!-- 分页区域 -->
       <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
       </el-pagination>

    </el-card>

        <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" 
    @close="addDialogClosed">
        <!-- 内容主体区域 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px"  >
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
        </span>
    </el-dialog>

     <!-- 修改用户信息对话框 -->
    <el-dialog title="修改用户" @close="editDialogClosed" :visible.sync="editDialogVisible" 
    width="50%"  >
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">

        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>

      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

     <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" @close="setRoleDialogClosed" width="50%">
      <div>
        <p>当前的用户 : {{ userInfo.username }}</p>
        <p>当前的角色 : {{ userInfo.role_name }}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" 
            :key="item.id" 
            :label="item.roleName" 
            :value="item.id"> 
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
    data() {

      //验证邮箱的规则 (自定义校验规则)
        var checkEmail = (rule, value, cb) => {
          //验证邮箱的正则表达式
          const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) {
            //合法的邮箱
     	      return cb()
      	  }
          cb(new Error('请输入合法的邮箱！'))
        }

      //验证手机号的规则 (自定义校验规则)
         var checkMobile = (rule, value, cb) => {
           const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
             if (regMobile.test(value)) {
             return cb()
           }
             cb(new Error('请输入合法的手机号！'))
          }

        return {
            //获取用户列表的参数对象
            queryInfo: {
                query: '',
                pagenum: 1,  // 当前的页数
                pagesize: 2  // 当前每页显示多少条数据
            },

            userlist: [],
            total: 0,

            // 控制用户对话框的显示和隐藏
            addDialogVisible: false,
             // 添加用户的表单对象
            addForm: {
              username: '',
              password: '',
              email: '',
              mobile: ''
            },
            // 添加表单的验证规则对象
            addFormRules: {
              username: [
                { required: true,  message: '请输入用户名',  trigger: 'blur' },
                { min: 3, max: 10, message: '用户名长度在 3 ~ 10 个字符', trigger: 'blur'},
              ],
              password: [
                   { required: true, message: '请输入密码', trigger: 'blur' },
                   { min: 6, max: 15, message: '长度在 6 ~ 15 个字符', trigger: 'blur' }
                ],
              email: [
                { required: true,  message: '请输入邮箱',  trigger: 'blur' },
                { validator: checkEmail, trigger: 'blur' }     
              ],
              mobile: [
                { required: true,  message: '请输入手机号',  trigger: 'blur' },
                { validator: checkMobile, trigger: 'blur' }       
              ]
            },

            // 查询到的用户信息对象
            editForm: {},

            //修改表单的验证规则对象
            editFormRules: {
              email: [
                { required: true,  message: '请输入邮箱',  trigger: 'blur' },
                { validator: checkEmail, trigger: 'blur' }     
              ],
              mobile: [
                { required: true,  message: '请输入手机号',  trigger: 'blur' },
                { validator: checkMobile, trigger: 'blur' }       
              ]
            },

            // 控制修改用户消息对话框显示和隐藏
            editDialogVisible: false,

            // 控制分配角色对话框的显示和隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: {},
            // 分配角色列表
            rolesList: [],
            // 已经选中的角色id值
            selectedRoleId: '',
            
        }
    },

    created() {
        this.getUserList()
    },

    methods: {
        async getUserList(){
            const { data: res } = await this.$http.get('users' , { 
                params: this.queryInfo 
            })
            if (res.meta.status !== 200) {
               return this.$message.error('获取用户列表失败!')
            }
            //    this.$message.success('获取用户列表成功!')
               this.userlist = res.data.users
               this.total = res.data.total
              //  console.log(res);
        },

      //监听 pagesize 改变的事件 每页显示的个数
      handleSizeChange(newSize){
        // console.log(newSize);
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },

      //监听 页码值 改变的事件
      handleCurrentChange(newPage){
        // console.log(newPage);
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },

      // 监听Switch状态的改变
      async userStatuChanged(userInfo) {
        // console.log(userInfo)
        const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
        if (res.meta.status !== 200) {
          userInfo.mg_state = !userInfo.mg_state
          return this.$message.error('更新用户状态失败!')
        }
        return this.$message.success('更新用户状态成功!')
      },

      // 监听添加用户的对话框关闭事件(重置表单)
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },

      // 点击按钮,添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async valid => {
          console.log(valid)
           if (!valid) return
          // 可以发起添加用户的网络请求
           const { data: res } = await this.$http.post('users', this.addForm)
           if (res.meta.status !== 201) {
             this.$message.error('用户添加失败了!')
           }
           // 隐藏添加用户的对话框
           this.addDialogVisible = false
           // 添加后重新获取用户列表数据,不需要用户手动刷新
           this.getUserList()
           this.$message.success('用户添加成功!')
        })
      },

      // 展示用于编辑的对话框
      async showEditDialog(id) {
        const { data: res } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) {
        return this.$message.error('查询用户数据失败!')
      }
        this.editForm = res.data
        // console.log(res)
        this.editDialogVisible = true
     },

      // 监听 修改用户对话框的关闭事件 (重置表单，但感觉没啥用)
      editDialogClosed(){
        this.$refs.editFormRef.resetFields()
      },

      //点击确定修改用户信息并提交
      editUserInfo() {
         this.$refs.editFormRef.validate(async valid => {
          // console.log(valid)
          if (!valid) return
          // 发起修改用户信息的数据请求
          const { data: res } = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败!')
          }
          // 关闭对话框
          this.editDialogVisible = false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新用户信息成功!')
        })
      },

      // 根据id删除对应的用户信息
      async removeUserById(id) {
        // 弹框询问用户是否删除数据
        const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // console.log(confirmResult)
        // 用户点击了删除,则返回字符串 confirm
        // 用户取消了删除,则返回字符串 cancel
          if (confirmResult !== 'confirm') {
            return this.$message.info('已经取消了删除')
          }

          const { data: res } = await this.$http.delete('users/' + id)
          if (res.meta.status !== 200) {
            return this.$message.error('该用户删除失败')
          }
          this.$message.success('该用户已经删除')
          this.getUserList()
        
      },

      // 展示分配角色的对话框
      async setRole(userInfo) {
        this.userInfo = userInfo
        // 在展示对话框之前, 获取所有的角色列表
        const { data: res } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败!')
        }
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },

      // 点击按钮,分配角色
      async saveRoleInfo() {
        if (!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色!')
        }
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, 
      {  //请求体
        rid: this.selectedRoleId   
      })
        if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败!')
        }
        this.$message.success('更新角色成功!')
        this.getUserList()
        this.setRoleDialogVisible = false
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed() {
        this.selectedRoleId = ''
        this.userInfo = {}
      }

    }
}
</script>

<style lang="less" scoped>
</style>
